ARISSat-1 Overview

ARISSat-1 Team

ARRL/TAPR DCC 2010

ARISS

• Amateur Radio on the International Space Station

• International organization that coordinates the amateur radio activities on the ISS

• Primary mission is education (STEM)

SuitSat

ARISSat-1

• Originally planned as SuitSat-2

• Significantly upgraded electronics

• Whoops! Orlan #27 discarded due to lack of “space” on station

• New space frame developed to house electronic modules

• Renamed ARISSat-1

System Modules

• Solar panels• Max Power Point Trackers• Battery• Control Panel• SSTV Cameras• Kursk Experiment• RF Transceiver• Internal Housekeeping Unit (IHU)

System Diagram

SMEX Solar Panel

• 6 solar panels• 19” x 10.5”• 19 watts each• Donated by

NASA (from SMEX project)

Max Power Point Trackers

• DC to DC Power Converters

• 1 per solar panel

• Extract max power from solar panels

Battery

• 825M3 Orlan Space Suit Battery

• 18 AgZn cells• Rechargeable• 28 Volts

Control Panel

SSTV Cameras

• 4 cameras• Mirrors to point in 4

different directions• Transmitted as FM

audio• Robot-36 format

Kursk Experiment

• Developed by students at the Kursk State University

• Measures the vacuum of space

• On for 1 orbit every 24 hours

RF Transceiver

• I/O at 10.7 MHz• Linear 2m Tx• Linear 70cm Rx• Command Rx

IHU Module

Space Frame

Space Frame Cutaway

Flight Unit

RF Band Plan

Transponder

• Mode V/U (70 cm Up, 2m Down)

• Linear

• Inverting (Tx LSB, Rx USB)

• 16 kHz bandwidth

• Can be worked with QRP transmitter and omni antennas

Digital Beacon

• BPSK-1000 w/FEC by Phil Karn KA9Q

• Legacy mode 400 BPSK (P3 type)

• Telemetry Data

• Experiment Data

• PC/Mac demodulator & decoder software

CW Beacon

• Call sign = RS01S

• CW Telemetry (subset)

• Call signs or names of developers

• CW1 or CW2 identifies BPSK mode

FM Audio

• Call sign = RS01S

• Voice Telemetry (subset)

• SSTV video in Robot-36 format

• Voice Greetings

Voice Greetings• 24 different greetings

• Mostly children

• Special one from Yuri Gagarin

• Secret word

• 15 different languagesEnglish Spanish Russian French

Italian Dutch Swedish Japanese

Chinese Catalan Bengali Portuguese

Hebrew Nepalese German

Cosmonaut Training - Video

ARISSat-1 Launch

• Progress #41 launch to ISS scheduled for January 2011

• Deployment by cosmonauts from the ISS scheduled for February 2011

• Reentry in about 1 year

Any Questions?

Thank You!

ARISSat-1 Team

ARRL/TAPR DCC 2010